They are too close to the originals. You would have to draw them differently or some how make it more mashed-up. Make the characters resemble a mix of The Troggs and the Sendak characters, or The Troggs in the style of Sendak (this may not communicate as well). The drawings you did are very good, by the way.

They would have to be stylised a ton to be ok, ..you'll need to find a way to twist it a little into the realms of parody, ..maybe things like hair metal hairdos, tight leather pants, face make-up etc.